Download astronomical: (meaning 1)

Mars Rover Lesson 1 Vocabulary List
Teacher Definitions
Key Vocabulary
apply: use what you have learned in a different way, place or time
astronomical: (meaning 1) of or pertaining to the study of stars planets and
extraterrestrial matter
(meaning 2) a very large number or amount
scale: the ratio or constant of proportion between a copy of an object that is
either larger or smaller than the original and the original
ADDITIONAL WORDS
apoastron: the point in an extra-Solar planet’s revolution when it is furthest away
from its star
astrology: a belief that the positions and movements of the stars, moon and
planets might influence events and the lives and behaviors of people. Modern
Western astrology is based on a Babylonian religion that held, in part, that the
location of the Sun, Moon and planets at the time of one’s birth determines one’s
fate in life.
ecliptic plane: the plane of the Earth’s orbit
ecliptic pole: the apparent location among the distant stars pointed to by a line
perpendicular to the ecliptic plane through the center of the Earth’s orbit.
periastron: the point in an extra-Solar planet’s revolution when it is closest to its
star